[TowerTalk] Ferrites 31 vs. 77 material

[Jim Brown]

On 11/1/2019 6:40 PM, Roger Parsons via TowerTalk wrote:
> I would imagine that processing has improved since then, but this must still be to some extent true.

You have a vivid imagination. :) I have measured data to prove that. 
Also see N6RK's post. As luck would have it, I gave a talk to a Silicon 
Valley club tonight on a very different topic, but afterwards fielded 
questions about chokes from several engineers who had worked in 
manufacturing. When I described my work described in an earlier post 
about dealing with component tolerances, they nodded their heads in 
agreement.

My first gig after college was at Motorola, which is where I first 
learned that a circuit design has to work with every part that gets 
plugged in to the circuit board, which means that the design has to work 
with components with tolerances that you can and did buy.

73, Jim K9YC